Persepsi Masyarakat terhadap Alun-alun Kota Bandung sebagai Ruang Terbuka Publik

Bandung merupakan sebuah kota yang strategis yang memiliki nilai sejarah yang cukup panjang dalam masa perjuangan. Alun alun Bandung merupakan hasil warisan ciri kota tradisional yang dibangun oleh penguasa kolonial yang merupakan pusat ruang terbuka kota. Dari masa kemasa Alun-alun kota Bandung telah mengalami beberapa kali Perubahan, baik bentuk maupun fungsinya sehingga mengakibatkan degradasi makna terhadap fungsinya bagi masyarakat Kota Bandung itu sendiri. Maka fenomena tersebut mengarahkan kepada pertanyaan penelitian yaitu bagaimana persepsi masyarakat terhadap Alun-alun Kota Bandung ditinjau sebagai ruang terbuka publik. Tujuan penelitian ini adalah untuk mengetahui persepsi masyarakat terhadap Alun-alun Kota Bandung. Dari tujuan tersebut maka sasaran yang dilakukan adalah mengidentifikasi karakter dan fungsi ruang terbuka publik yaitu fungsi ekologis, arsitektural, dan sosial. Dari hasil analisis dengan menggunakan kuesioner yaitu uji sampel dengan regresi linear sederhana dengan pendekatan analisis pengguna dan analisis karakteristik ruang terbuka publik. Hasil penelitian ini menghasilkan penilaian baik terhadap korelasi variabel bebas yaitu persepsi masyarakat terhadap variabel terikat yaitu Alun-alun Kota Bandung, setiap kali pertanyaan yang berkenaan dengan Persepsi masyarakat terhadap Alun-alun Kota Bandung akan mempengaruhi nilai hasil pengujian yang cenderung meningkat akan keberadaan Alun-alun itu sendiri. Hasil penelitian ini bisa dimanfaatkan untuk mengangkat kembali citra Alun-alun Kota Bandung sebagai ruang publik atau (Central Square).[Public Perception of The Alun-alun Bandung as Public Open Space] Bandung is a city that has a value that strategic long history in the struggle. Alun Bandung square is the result of inherited traits of traditional town built by the colonial rulers which is the center of the city open space. Over time, Bandung town square has undergone several changes, both form and function, resulting in degradation of the meaning of the function for the city of London itself. The phenomenon then leads to the research question is how the public perception of the square is the city of Bandung reviewed as public open space for the present study tries to analyze the function of the existence of Bandung City Square as a public space. The purpose of this study was to determine the public perception of the square is the city of Bandung. From these objectives, the target does is identify the character and function of public open space that is the function of ecological, architectural and social. From the analysis by using a questionnaire that test samples with a simple linear regression analysis approach and analysis of the characteristics of users of public open space. The results of this study resulted in better assessment of the correlation of the independent variable is the public perception of the dependent variable is the town square of Bandung, every time queries regarding the public\u27s perception of the town square Bandung will affect the value of the test results are likely to increase in the existence Square itself. the results of this study can be used to lift the image of Bandung city square as a public space or (Central Square)

Additional file 1 of A performance study of the impact of recombination on species tree analysis

Appendix with Supplementary Material. (PDF 506 kb

Modeling Pressure Stability and Contact-Angle Hysteresis of Superlyophobic Surfaces Based on Local Contact Line

Superlyophobic surfaces (SLS) are a promising versatile platform for planar microfluidics due to their excellent nonwetting and low flow-resistance performances for almost any liquid; however, for micro fabrication and practical application, the nonwetting performances, especially pressure stability and contact-angle hysteresis (CAH), are vital parameters yet still difficult to predict well. On the basis of the Laplace pressure formulation and the pinning condition on typical overhang surface structures, we obtained a universal expression to calculate the critical transition pressure and hence proposed two dimensionless parameters as criteria for the Cassie–Baxter state. We also propose a new model for the CAH of both water and oil on SLS by introducing contact line fraction. The theoretical predications are well supported by the experimental data on the SLS with microfabricated T-shape microstructures. These achievements on modeling SLS pressure stability and CAH may shed new light for designing SLS with better performances for microfluidics and other fields

Anomalous Growth and Coalescence Dynamics of Hybrid Perovskite Nanoparticles Observed by Liquid-Cell Transmission Electron Microscopy

We report on <i>in situ</i> observations of nucleation, growth, and aggregation of hybrid organic–inorganic perovskites by liquid-cell transmission electron microscopy. Direct crystallization of hybrid CH₃NH₃PbI₃ nanoparticles is achieved through an electron beam-assisted solvent evaporation approach. Time-lapse liquid-cell TEM imaging of the nanoparticles reveals a growth trend which is not entirely consistent with the classical Lifshitz–Slyozov–Wagner growth model. Significantly complex dynamical behaviors are observed during the coalescence process of CH₃NH₃PbI₃ nanoparticles. We propose that the chemical instability inherent in the hybrid perovskite iodides should be considered to understand this phenomenon in addition to the oriented attachment mechanism. This study provides a useful reference for understanding the intriguing chemical and physical properties of hybrid organic–inorganic perovskites

Phase Separation Prior to Alloying Observed in Vacuum Heating of Hybrid Au/Cu₂O Core–Shell Nanoparticles

The coexistence of decomposition, phase segregation, and alloying behaviors of Au@Cu₂O core–shell nanoparticles were found through in situ heating transmission electron microscopy imaging and spectral-analysis techniques. Thermally induced compositional variations (from Cu₂O to Cu) were observed to be present in the nanoparticle shells, which was followed by a spontaneous occurrence of Au–Cu alloying. The higher-Cu loading (1:10 Au/Cu) sample displays a clear Cu/Cu₂O phase segregation driven by the internal stresses resulting from lattice mismatch. Cu extrusions also occur in this sample after storage in ethanol for 10 days. These in situ observations/findings may help enhance a fundamental understanding of remarkable experimental aspects arising in catalytic processes and other applications as well as provide a valuable reference for testing/refining potential models of hybrid nanoparticles in theoretical calculations

Geologic map of Songliao Basin, with well locations (red dots), sampling depths, and geographic coordinates indicated.

<p>Geologic map of Songliao Basin, with well locations (red dots), sampling depths, and geographic coordinates indicated.</p

Enhancing Stability of Tannic Acid-Fe^III Nanofiltration Membrane for Water Treatment: Intercoordination by Metal–Organic Framework

Tannic acid (TA)-FeIII nanofiltration (NF) membrane has been demonstrated to possess more favorable removal of trace organic contaminants (TrOCs) over the conventional polyamide NF membrane. However, the drawback of acid instability severely hinders the practical application of TA-FeIII NF membrane in the treatment of (weak) acidic wastewater containing TrOCs (e.g., pharmaceutical wastewater, surface water, and drinking water). Herein, we introduced the MIL-101(Cr) nanoparticle, a kind of metal–organic framework (MOF), into the TA-FeIII selective layer to enhance the membrane acid stability. The acid-tolerance parameter of MIL-101(Cr)-stabilized TA-FeIII membrane (TA-FeIII-MOF membrane, 12,000 ppm/s–1) was two orders of magnitude larger than that of the TA-FeIII membrane (50 ppm/s–1), and the TA-FeIII-MOF membrane can withstand acid treatment at pH = 4 for more than 30 days. Meanwhile, the TA-FeIII-MOF membrane displayed increased water permeance from 9.5 to 12.7 L/(m2·h·bar) after the MOF addition, without compromising the selectivity. The enhanced acid stability for the TA-FeIII-MOF membrane was ascribed to an intercoordination mechanism, where FeIII centers (from TA-FeIII complex) coordinated with −COOH groups (from terephthalic acid of MOF) and CrIII centers (from MOF) coordinated with −OH groups (from TA of TA-FeIII complex), which was verified by the density functional theory calculation. This study highlights a new approach for the development of a TA-FeIII-based NF membrane with markedly enhanced acid stability, which is important for its real application in wastewater treatment and water reuse

The Bland-Altman plot for HR estimates by our proposed method (right) and the baseline (left) on the Pose-Variant HR dataset.

<p>The Bland-Altman plot for HR estimates by our proposed method (right) and the baseline (left) on the Pose-Variant HR dataset.</p

The reflection and absorption of environmental light by human skin.

<p>The reflection and absorption of environmental light by human skin.</p

RMSE (<i>M</i>_<i>e</i> ± <i>SD</i>_<i>e</i>) of three methods: Baseline, ours with all procedures except adaptive patch selection, and ours with all procedures.

<p>RMSE (<i>M</i>_<i>e</i> ± <i>SD</i>_<i>e</i>) of three methods: Baseline, ours with all procedures except adaptive patch selection, and ours with all procedures.</p